<span>factors of 18 = (2)(3)(3)
factors of 16 = (2)(2)(2)(2)
factors of 14 = (2)(7)
least common denominator = (2)(2)(2)(3)(3)(2)(7) = 16*9*7 = 1008 </span><span>
</span>
Answer:
The first listed equation is the correct equation to solve
The correct answer is: t = 5 seconds
Step-by-step explanation:
Let me mention first that there is an error in the statement that the gravitational pull of the Earth is 16 ft/s^2. It is in fact 32 ft/s^2, and the actual equation uses half of the acceleration multiplied by the square of the variable time, so it gives as final expression :

and we want to find the value/s for "t" that make this equation equal zero (when it reaches the ground and the object just touches the ground. This makes the equation we want to solve:

which solving for "t" becomes:

So we adopt the positive answer (positive time) since the negative value has no physical meaning for this problem.
That is: t = 5 seconds
The answer is 28. 7x2=14 and then 14x2=28. Remember PEMDAS